Ballpoint pen



FIG. 1 is a top view of a ballpoint pen of the present invention;

FIG. 2 is a front view thereof;

FIG. 3 is a left side view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a bottom view thereof;

FIG. 7 is a partial front view of the top portion of the ballpoint pen with a section of the pen clip rotated to the right shown without the lower part and enlarged for clarity;

FIG. 8 is a partial left side view of the top portion of the ballpoint pen with a section of the pen clip rotated to the right shown without the lower part and enlarged for clarity; and,

FIG. 9 is a partial rear view of the top portion of the ballpoint pen with a section of the pen clip rotated to the right shown without the lower part and enlarged for clarity.

The broken lines in FIGS. 7, 8 and 9 are included to show the broken away edges of the partial figures and features on the back of the clip that form no part of the claimed design. 

The ornamental design for a ballpoint pen, as shown and described. 